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Marquise|Natural|GIA

0.78ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1563722001

Certificate GIA 1563722001

Diamond specifications and retailer prices

From $2,240 AUD
SGD 2,126 SGD
As of October 31, 2026
Save $1,849 AUD (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,089 AUD at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 0.78ct natural marquise diamond

This 0.78ct natural marquise sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1563722001. Listed at 13 retailers as of October 30, 2026, with prices from $2,240 to $4,089, a $1,849 spread on the same certified stone. Helzberg Diamonds lists it at $4,089. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.78
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.87°
Pavilion angle38.32°
OriginNatural
Grading LabGIA
CertificateGIA 1563722001
Dimensions9.31 × 4.85 × 2.89 mm
L/W Ratio1.92
Culet sizeNone
Top View
9.31 mm4.85 mm0.78 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1563722001
Side View
Table 58.0%Crown 37.87°Girdle: MED-VTKPavilion 38.32°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $4,089 AUD|Low: $2,282 AUD|High: $4,089 AUD|Avg: $2,878 AUD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 8$2,282 AUD
Retailer 7$2,282 AUD
Retailer 9$2,312 AUD
Retailer 10$2,349 AUD
Retailer 3$2,486 AUD
Retailer 2$2,555 AUD
Retailer 5$2,864 AUD
Retailer 12$3,021 AUD
Retailer 6$3,214 AUD
Retailer 11$3,479 AUD
Retailer 4$3,694 AUD
Helzberg Diamonds$4,089 AUD

4 data points across 12 retailers

13 retailers$2,240 AUD to $4,089 AUD

A
Cheapest Retailer
-
$2,240 AUD
SGD 2,126 SGD
A
Retailer 2
-
$2,282 AUD
$1,603 USD
View
A
Retailer 3
-
$2,282 AUD
$1,603 USD
View
A
Retailer 4
-
$2,312 AUD
$1,624 USD
View
A
Retailer 5
-
$2,349 AUD
$1,650 USD
View
A
Retailer 6
-
$2,486 AUD
SGD 2,360 SGD
View
A
Retailer 7
-
$2,555 AUD
£1,413 GBP
View
A
Retailer 8
-
$2,864 AUD
$2,012 USD
View
B+
Retailer 9
-
$3,021 AUD
$2,122 USD
View
B+
Retailer 10
-
$3,214 AUD
€2,150 EUR
View
B+
Retailer 11
-
$3,479 AUD
$2,444 USD
View
B
Retailer 12
-
$3,694 AUD
$2,595 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLMJNIIGGH · Oct 30
$4,089 AUD
$2,872 USD
View
12 more retailers have this diamond
Prices start from $2,240 AUDSave up to $1,849 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.78ct Marquise
$2,240 AUD